169 laboratories in United States are accredited by A2LA under ISO/IEC 17025 to perform ANSI/NCSL Z540-1-1994 testing. These labs commonly handle pH buffer solutions matrices. Most frequently tested analytes via this method in United States: Ph, Dc Voltage, Conductivity. From the accredited scope text: “ANSI/NCSL Z540-1-1994 GL TECHNOLOGIES LLC 6361 Nancy Ridge Dr. San Diego, CA 92121 C. J. Langner Phone: 858 202 1408 CALIBRATION Valid To: October 31, 2026 Certificate Number: 3364.01 In recognition o” “ANSI/NCSL Z540-1-1994 AALFA - KAL METROLOGY LABORATORY, DIVISION of AALBORG INSTRUMENTS & CONTROLS, INC. 20 Corporate Dr. Orangeburg, NY 10962 Agnieszka Malolepszy Phone: 845 770 3000 CALIBRATION Vali” “ANSI/NCSL Z540-1-1994 K-LIGHT LABORATORIES CORP. 15705 Arrow Highway Suite #3 Irwindale, CA 91706 Juan Mendez Phone: 626 960 0400 CALIBRATION Valid To: December 31, 2026 Certificate Number: 3415.01 In” “ANSI/NCSL Z540-1-1994 FLUKE CALIBRATION, PHOENIX – PRIMARY PRESSURE AND FLOW LABORATORY 4765 East Beautiful Lane Phoenix, AZ 85044 Tim Mueller Phone: 877 355 3225 CALIBRATION Valid To: March 31, 2027”
Campbell, CA, US
Accredited Laboratory A2LA has accredited PACIFIC CALIBRATION SERVICES, INC. Campbell, CA for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standar
Greensboro, NC, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 8203-J Piedmont Triad Parkway Greensboro, NC 27409 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2027 Certificate Number: 1395.01 In recognition
Bloomington, MN, US
ANSI/NCSL Z540-1-1994 UNITED STANDARDS LAB, INC. 8148 Pillsbury Avenue Bloomington, MN 55420 Jacob Dolezal Phone: 612 823 2616 Fax: 612 823 8989 CALIBRATION Valid To: March 31, 2027 Certificate Number: 2290.
Chatsworth, CA, US
ANSI/NCSL Z540-1-1994 PRIMARY INSTRUMENTS INCORPORATED 9553 Vassar Avenue Chatsworth, CA 91311 Abner de Leon Phone: 818 993 4971 CALIBRATION Valid To: October 31, 2027 Certificate Number: 2011.01 In recogni
Richardson, TX, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 783 N. Grove Road, Suite 106 Richardson, TX 75081 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2027 Certificate Number: 1395.03
Springboro, OH, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 800 Pleasant Valley Drive Springboro, OH 45066 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2027
Kaysville, UT, US
ANSI/NCSL Z540-1-1994 SENSOR CALIBRATIONS 450 North Flint Street Kaysville, UT 84037 Stephen Preston Phone: 385 501 8650 CALIBRATION Valid To: June 30, 2027 Certificate Number: 7037.01 In recognition of th
Salt Lake City, UT, US
ANSI/NCSL Z540-1-1994 WESTERN STATES CALIBRATION 105 West 2950 South Salt Lake City, UT 84115-3433 Lon Miles Phone: 801 466 1700 CALIBRATION Valid To: February 29, 2028 Certificate Number: 2904.01 In recogn
Houston, TX, US
ANSI/NCSL Z540-1-1994 TECHNOLOGY & CALIBRATION, INC. dba TECH CAL 3538 Pinemont Drive Houston, TX 77018 Nick Green Phone: 713 692 1600 CALIBRATION Valid To: November 30, 2026 Certificate Number: 5147.01 In
Scottsdale, AZ, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 1505 N Hayden Road, Suite 104 Scottsdale, AZ 85257 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026
Pittsburgh, PA, US
ANSI/NCSL Z540-1-1994 PROCESS INSTRUMENTS, LLC. 703 Rodi Road, Suite100 Pittsburgh, PA 15235 Greg King Phone: 412 431 4600 Website: www.procinst.com CALIBRATION Valid To: April 30, 2026
Clayton, OH, US
ANSI/NCSL Z540-1-1994 INSTRUMENT CALIBRATION SOLUTIONS, LLC 7550 B Jacks Lane Clayton, OH 45315 Mr. David Beier Phone: 724 846 0136 CALIBRATION
Arlington Heights, IL, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 TRESCAL, INC. 718 West Algonquin Road, Arlington Heights, IL 60005 Tom Davis Phone: (847) 718 0172 CALIBRATION Valid To: May 31, 2026
Nashville, TN, US
Accredited Laboratory A2LA has accredited K & S ASSOCIATES, INC. Nashville, TN for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standard ISO/IEC
Shirley, MA, US
ANSI/NCSL Z540-1-1994 M PRECISION LABORATORIES, INC 2 Shaker Road, Suite D201A Shirley, MA 01464 Jeffrey Mullen Phone: 978 425 5163 CALIBRATION Valid To: October 31, 2027 Certificate Number: 3508.01 In re
Providence Forge, VA, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 6540 Emmaus Church Road Suite 106 Providence Forge, VA 23140 Ben Slaughter Phone: 804 966 7585 CALIBRATION Valid To: April 30, 2026 Certificate Number: 1486.02 In recogni
Scottsdale, AZ, US
ANSI/NCSL Z540-1-1994 NATIONAL CALIBRATION INC. 1395 N Hayden Rd Scottsdale, AZ 85257 Bruce Demaree Phone: 602 437 0114 CALIBRATION Valid To: August 31, 2026 Certificate Number: 1892.01 In recognition
Saco, ME, US
ANSI/NCSL Z540-1-1994 LAW CALIBRATION, LLC 41 Spring Hill Road Saco, ME 04072 Louis A. Waterhouse III Phone: 207 583 2980 CALIBRATION Valid To: March 31, 2026 Certificate Number: 2398.01 In recognition
Pineville, NC, US
ANSI/NCSL Z540-1-1994 and R205 – Specific Requirements: Calibration Laboratory Accreditation Program. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (r
Sacramento, CA, US
ANSI/NCSL Z540-1-1994 APPLIED TECHNICAL SERVICES, LLC 9727 Business Park Drive, Suite. C Sacramento, CA 95827 Angelo Melgoza Phone: (916) 635 4489 CALIBRATION Valid To: September 30, 2026
Naperville, IL, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 1701 Quincy Avenue, Suite 32 Naperville, IL 60540 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026 Certificate Number: 1395.07 In recognition
Newtown, CT, US
ANSI/NCSL Z540-1-1994 CONNECTICUT CALIBRATION TECHNOLOGIES, INC., DBA CONNECTICUT CALIBRATION LABS 327 S. Main Street Newtown, CT 06470 Joseph Zeolla Phone: 203 270 1263 CALIBRATION Valid To: October 31, 2026
Irving, TX, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 6601 N. Beltline Road, Suite 140 Irving, TX 75063 Craig Glunt Phone: 214 591 8300 CALIBRATION Valid To: March 31, 2027 Certificate Number: 2516.01 In recognition of the
Deerfield Beach, FL, US
ANSI/NCSL Z540-1-1994 M & M METROLOGY, INC. 254 South Military Trail Deerfield Beach, FL 33442 Timothy McLoughlin Phone: 954 426 0111 CALIBRATION Valid To: June 30, 2026 Certificate Number: 5352.01 In re
Huntsville, AL, US
ANSI/NCSL Z540-1-1994 ELEMENT MATERIALS TECHNOLOGY HUNTSVILLE 7800 Highway 20 West Huntsville, AL 35806 Steven Felice Phone: 256 716 4439 Email: Steve.Felice@element.
Redmond, WA, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 14613 NE 87th Street Redmond, WA 98052 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026 Certificate Number: 1395.12 In recognition of the suc
New Berlin, WI, US
Accredited Laboratory A2LA has accredited QUALITY CALIBRATION SERVICE, INC. New Berlin, WI for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standa
Billerica, MA, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 6 Cook St. Billerica, MA 01821 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026 Certificate Number: 1395.13 In recognition of the successful
Madison, PA, US
Accredited Laboratory A2LA has accredited CONSTELLATION POWERLABS - MADISON, PA Madison, PA for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Sta
Union, NJ, US
ANSI/NCSL Z540-1-1994 INSTRU-MET CORPORATION 931 Lehigh Avenue Union, NJ 07083 Paul Metzger Phone: 908 851 0700 Fax: 908 686 1688 Email: paulmetzger@instrumet.com URL: http://www.instru-met.com CALIBRATION V
Boca Raton, FL, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 TRESCAL, INC. 554 NW 77th St Boca Raton, FL 33487 Deborah McLaren Phone: 561 999 1896 CALIBRATION Valid To: November 30, 2026
Victor, NY, US
ANSI/NCSL Z540-1-1994 WEST CALDWELL CALIBRATION LABORATORIES, INC. 1575 State Route 96 Victor, NY 14564 James Zhu Phone: 585 586 3900 CALIBRATION Valid To: January 31, 2028 Certificate Number: 1533.01 In re
Caguas, US
ANSI/NCSL Z540-1-1994 MENTOR TECHNICAL GROUP METROLOGY LAB Caguas Real #100 Alhambra Granada Blvd. Caguas, PUERTO RICO Wilfredo Roman Phone: 787 743 0897 CALIBRATION Valid To: June 30, 2026 Certificate Numb
Edison, NJ, US
ANSI/NCSL Z540-1-1994 INDUSTRIAL PROCESS MEASUREMENT 3910 Park Avenue, Unit 7 Edison, NJ 08820 Mark Gural Phone: 732 632 6400 www.instrumentation2000.com CALIBRATION Valid To: December 31, 2026 Certificate Num
Livonia, MI, US
ANSI/NCSL Z540-1-1994 CONTROLS SERVICE, INC. 32027 Industrial Road Livonia, MI 48150 Michael W. Rice Phone: 313 565 4200 CALIBRATION Valid To: July 31, 2027 Certificate Number: 1740.01 In recognition of t
Santa Fe Springs, CA, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI CO., LLC 10751 Forest Street Santa Fe Springs, CA 90670 Michael Howard Phone: 800-903-8823 CALIBRATION Valid To: December 31, 2026 Certificate Number: 3601.11 In recogni
Saginaw, MI, US
ANSI/NCSL Z540-1-1994 INCAL TECHNOLOGIES, INC. 3870 E. Washington Road Saginaw, MI 48601 Robert VanBuskirk Phone: 989 758 0950 CALIBRATION Valid To: May 31, 2027 Certificate Number: 1332.01 In recognition
Paris, OH, US
ANSI/NCSL Z540-1-1994 ALL AMERICAN SCALES & CALIBRATION INC. 12943 Lisbon St. NE Paris, OH 44669 Patrick Moody Phone: 330 862 8100 CALIBRATION Valid To: August 31, 2027 Certificate Number: 1848.01 In r
Piedmont, SC, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 CONSTELLATION POWERLABS 301 Hurricane Creek Road Piedmont, SC 29673 David Nowakowski Phone: 610 506-0426 CALIBRATION Valid To: August 30, 2027 Certificate Number:
Milwaukee, WI, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 7350 North Teutonia Avenue Milwaukee, WI 53209 Nathan Thrasher Phone: 414 351 7420 CALIBRATION Valid To: May 31, 2027 Certificate Number: 1078.01 In recognition of the
Rockville, MD, US
ANSI/NCSL Z540-1-1994 AUTOMATED PRECISION INC. 15000 John Hopkins Drive Rockville, MD 20850 Sherri Eason Phone: 757 223 4157 x 110 CALIBRATION Valid To: December 31, 2026 Certificate Number: 2229.01 In re
Prescott, AZ, US
ANSI/NCSL Z540-1-1994 ISO-CAL NORTH AMERICA 1026 Spire Dr. Prescott, AZ 86305 Erik Naranen Phone: 480 336 8133 Fax: 480 336 8737 enaranen@isocalnorthamerica.com CALIBRATION Valid To: September 30, 2026 Cert
Allentown, PA, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 2125 SW 28th Street, Suite 300 Allentown, PA 18103 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026 Certificate Number: 1395.09 In recognit
Shelby Township, MI, US
Accredited Laboratory A2LA has accredited INTERNATIONAL CERTIFICATION MEASUREMENTS, INC. (SUBSIDIARY OF LEADER CORPORATION) Shelby Township, MI for technical competence in the field of Calibration This laboratory is accredited
Bartlett, TN, US
ANSI/NCSL Z540-1-1994 APPLIED TECHNICAL SERVICES, LLC. 6002 S. Ash Ave Tempe, AZ 85283 Eric Mansfield Phone: 678 797 3423 CALIBRATION Valid To: December 31, 2027 Certificate Number: 1888.08 In recognition
San Marcos, TX, US
ANSI/NCSL Z540-1-1994 MENSOR, LP 201 Barnes Drive San Marcos, TX 78666 Doyle L. Butler Phone: 512 396 4200 CALIBRATION Valid To: July 31, 2027 Certificate Number: 2066.01
Draper, UT, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 65 E. Wadsworth Park Drive Suite 101 Draper, UT 84020 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2026 Certificate Number: 1395.20 In recogni
Irwindale, CA, US
ANSI/NCSL Z540-1-1994 K-LIGHT LABORATORIES CORP. 15705 Arrow Highway Suite #3 Irwindale, CA 91706 Juan Mendez Phone: 626 960 0400 CALIBRATION Valid To: December 31, 2026 Certificate Number: 3415.01 In recog
Tampa, FL, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 5455 W. Waters Ave., Suite 210 Tampa, FL 33634 Richard Traub Phone: 352 523 1900 CALIBRATION Valid To: September 30, 2027 Certificate Number: 1078.02 In recognition of th
Broussard, LA, US
ANSI/NCSL Z540-1-1994 CAL-TEC, INC. 114 Thruway Park Road Broussard, LA 70518 Chris Grevemberg Phone: 337 839 0450 Email: lab@caltecinc.com CALIBRATION Valid To: December 31, 2025 Certificate Number: 3781.01
Showing labs 51–100 of 169. Use pagination below to see more.
This page is a fixed slice of the register: every ANSI/NCSL Z540-1-1994 scope we hold for United States. Search narrows it further by city, accreditation body, or a term from the scope text itself.
Search labs in United StatesAmerican Association for Laboratory Accreditation (A2LA) is the primary accreditation body issuing ISO/IEC 17025 accreditation for testing laboratories in United States.
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Accreditation to this standard provides independent confirmation that a laboratory operates a quality management system and is technically competent to produce valid results within its declared scope.